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Black round foam cord, ten feet long, half inch diameter, smooth closed-cell finish

Zoro Select

Zoro Select Foam Cord 10 ft 1/2 in Black

SKU CH-WDV6-N5AQT

Black Buna-N foam cord, 10 ft long and 1/2 in diameter, rated from -40 to 200 °F with excellent oil and water resistance

  • ColorBlack
  • 10 ft length seals long gaps in one piece
  • Closed-cell Buna-N resists water and oil ingress
  • Withstands -40 °F to 200 °F temperature range
  • 17 lb/cu ft density cushions vibration and shock
  • Meets ASTM D1056 2B3 standard for reliable performance

Zoro Select Foam Cord 10 ft 1/2 in Black

This closed-cell Buna-N foam cord measures 10 ft in length with a 1/2 in diameter and a smooth black finish. It is suited for sealing, cushioning and gap-filling tasks in industrial, marine and general maintenance environments. The material meets ASTM D1056 2B3 grade standards and operates reliably from -40 Degrees F to 200 Degrees F. Buyers who need an adhesive-backed seal or a specific fire-rated foam will not find those features here.

Build quality and daily handling

The cord has a density of 17 lb/cu ft and a firmness of 9 to 13 psi at 25 percent deflection, giving it a resilient yet compressible feel. Tensile strength is rated at 160 psi, while the closed-cell structure provides excellent resistance to water and oil. Weather resistance is rated good and abrasion resistance fair, so prolonged outdoor exposure or heavy mechanical wear may degrade the surface over time. The smooth texture allows it to slide into channels or around pipes without snagging.

Thermal performance and durability

The foam retains its properties across a broad temperature range, with a maximum service temperature of 200 Degrees F and a minimum of -40 Degrees F. Compression set is measured at 22 percent, indicating moderate recovery after prolonged loading. Chemical resistance is rated good overall, with excellent oil resistance, making it suitable for contact with lubricants and fuels. It does not carry a flame-retardant rating, so applications requiring fire compliance should use a different material.

Highlights

  • 10 ft length seals long gaps in one piece
  • Closed-cell Buna-N resists water and oil ingress
  • Withstands -40 °F to 200 °F temperature range
  • 17 lb/cu ft density cushions vibration and shock
  • Meets ASTM D1056 2B3 standard for reliable performance

Specifications

BrandZORO SELECT
ColorBlack

Questions about this item

What does the ASTM D1056 2B3 standard indicate about this foam cord?

The ASTM D1056 2B3 standard confirms this is a closed-cell Buna-N foam cord with a density of 17 lb/cu ft and firmness of 9 to 13 psi at 25 percent deflection.

What are the physical dimensions needed to fit this foam cord into a groove or channel?

This cord has a 1/2 in diameter and a 10 ft length, requiring a channel slightly wider than 1/2 in for proper seating.

How is this foam cord installed, and what common mistake should be avoided?

Press the cord into the groove without stretching; stretching reduces the cross-section and compromises the seal at the rated 160 psi tensile strength.

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